A design for controlled release drug delivery system can be used for solving problems of targeting of drug to a specific organ or tissue and controlling the rate of drug delivery to the target site. This technique used for prevention of protein degradation by the encapsulation method and it provide the protection, taste masking, alteration in absorption site and prolong the drug release. Many different active materials like drugs, flavor, enzyme, vitamins, pesticides and catalyst have been successfully encapsulated inside microcapsules made from variety of polymeric and non-polymeric materials. The aim of this article is to present a concise review on the applications of microencapsulation in the pharmaceutical field, general over view and method of preparation of microencapsulation.
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